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package imap_test
import (
"bytes"
"io"
"net"
"testing"
"github.com/emersion/go-imap"
)
func TestNewConn(t *testing.T) {
b := &bytes.Buffer{}
c, s := net.Pipe()
done := make(chan error)
go (func() {
_, err := io.Copy(b, s)
done <- err
})()
r := imap.NewReader(nil)
w := imap.NewWriter(nil)
ic := imap.NewConn(c, r, w)
sent := []byte("hi")
ic.Write(sent)
ic.Flush()
ic.Close()
if err := <-done; err != nil {
t.Fatal(err)
}
s.Close()
received := b.Bytes()
if string(sent) != string(received) {
t.Errorf("Sent %v but received %v", sent, received)
}
}
func transform(b []byte) []byte {
bb := make([]byte, len(b))
for i, c := range b {
if rune(c) == 'c' {
bb[i] = byte('d')
} else {
bb[i] = c
}
}
return bb
}
type upgraded struct {
net.Conn
}
func (c *upgraded) Write(b []byte) (int, error) {
return c.Conn.Write(transform(b))
}
func TestConn_Upgrade(t *testing.T) {
b := &bytes.Buffer{}
c, s := net.Pipe()
done := make(chan error)
go (func() {
_, err := io.Copy(b, s)
done <- err
})()
r := imap.NewReader(nil)
w := imap.NewWriter(nil)
ic := imap.NewConn(c, r, w)
began := make(chan struct{})
go ic.Upgrade(func(conn net.Conn) (net.Conn, error) {
began <- struct{}{}
ic.WaitReady()
return &upgraded{conn}, nil
})
<-began
ic.Wait()
sent := []byte("abcd")
expected := transform(sent)
ic.Write(sent)
ic.Flush()
ic.Close()
if err := <-done; err != nil {
t.Fatal(err)
}
s.Close()
received := b.Bytes()
if string(expected) != string(received) {
t.Errorf("Expected %v but received %v", expected, received)
}
}
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